Tailored sewage treatment equipment for service areas of various scales

Tailored sewage treatment equipment for service areas of various scales--Weifang Qianqiu Environmental Technology Co., Ltd.

The original process conditions can be changed according to the program: equipment and structures for water treatment have changed; Changes in external conditions require corresponding changes in process conditions; Changes in incoming water quality or effluent indicators; Change in the variety of water treatment agents; Control items that need to be increased or decreased for safety production; Adopt process conditions determined through optimization experiments. All changes to the control parameters of sewage treatment processes must be approved by the technical management department, and the process parameter change notice must be issued before it becomes effective. All job process records, ledgers, and process parameter change notices should be archived as original data for future reference.The difference between activated sludge process and biofilm process is not only the suspension and attachment of microorganisms, but more importantly, the diffusion process is a factor that must be considered in biofilm treatment systems. In a biofilm reactor, organic pollutants, dissolved oxygen, and various essential nutrients must first diffuse from the liquid phase to the surface of the biofilm, and then enter the interior of the biofilm. Only pollutants that diffuse to the surface or interior of the biofilm can be decomposed and transformed by microorganisms inside the biofilm, ultimately forming various metabolic products. In addition, in biofilm reactors, the separation of SRT and HRT (hydraulic retention time) is achieved by immobilizing microorganisms on carriers, allowing microorganisms with slow proliferation rates to grow and reproduce. Therefore, biofilm is a stable and diverse microbial ecosystem.Sand settling tank: 1) The hydraulic retention time of the sand settling tank is generally 1.5 hours. 2) The division of sand settling tanks generally requires a minimum of 2 compartments for small processing capacities (≤ 5m3/h), and 3 compartments for processing capacities greater than 7.5m3/h. 3) The flow holes between the compartments of the sedimentation tank are made of H-shaped pipes, and the flow velocity inside the pipes should not exceed 0.2m/s based on the average processing capacity. The diameter of the H-shaped pipe shall not be less than 200mm, and multiple H-shaped pipes can be used for large sand settling tanks. 4) The manhole of the sedimentation tank should generally be set at 1 per compartment, and a ladder must be installed at the same time.

The requirements for sewage treatment equipment in highway service areas are as follows: 1. Submersible pumps
1) The pump should meet the performance parameter requirements of the technical specifications and be manufactured in accordance with relevant national standards and technical documents.
2) The materials of pump components and parts must be compatible with the working conditions, which depend on the location of use, operating conditions, and properties of the medium being transported; The materials of pump components and parts should comply with or not be lower than the relevant national standards and have material qualification certificates. Otherwise, the pump manufacturer should conduct chemical analysis and mechanical performance tests to determine whether they meet the requirements for the use of sewage treatment equipment in highway service areas. 3) Castings must not have defects such as cracks, shrinkage cavities, sand holes, unevenness that affect pump performance and appearance quality. The surface of castings should be cleaned using methods such as sandblasting and shot blasting; Casting burrs, sprues, risers, nodules, etc. should be removed and leveled. Casting defects should be repaired using welding or other processes, but it is not allowed to eliminate the defects by tapping; All castings should undergo internal stress relief treatment.
4) The joint of the welded part should be a smooth metal surface, without rust, oil stains, etc. before welding. The weld seam should not have defects such as holes or slag inclusions. The edge and top of the weld seam should be fully welded, the welding surface should be flat, and the transition should be smooth; Welding components should undergo stress relief treatment.
5) Pump and pipeline connection: The pump inlet and outlet are connected to the pipeline using flanges. The type and size of flanges shall comply with the national standard GB9112-2000;

The flange welding end groove size shall be in accordance with the provisions of GB9124-2000; The nominal pressure of the flange and the maximum allowable working pressure at different temperatures shall comply with the provisions of GB9124-2000; The technical requirements for flanges shall comply with the provisions of GB9124-2000.
6) Mechanical processing: The processing surface of the main components of the pump should not have cracks, indentations, or inclusions that affect product quality. The friction surface and sealing surface should not have burrs, scratches, scratches, bumps, or other defects. 2. Atmospheric pressure box
Tailored sewage treatment equipment for service areas of various scales--Weifang Qianqiu Environmental Technology Co., Ltd.

Sewage contains a large amount of dirt and impurities. When sewage flows through sealing equipment, the sealing spring will accumulate residual sewage, which not only affects the normal contraction and elasticity of the spring, making it difficult to recover, but also corrodes the spring, causing the diameter of the spring to decrease and forming cracks. When the crack reaches a certain angle, it will break. If corrugated pipes are used to replace springs in the equipment, this problem may also occur.AOO process, determining water quantity and quality: i.e. measuring sewage flow rate, BOD5 of incoming sewage, and the general composition of organic pollutants. Reference value for dissolved oxygen control: anaerobic section DO ≤ 0.2; Hypoxia stage DO ≤ 0.5 mg/l; The DO of aerobic section is 2.0 mg/l, and the DO data of each treatment section of the biological tank is obtained every day according to the online instrument, portable DO tester or laboratory sampling, and the air supply of the blower is adjusted after comprehensive analysis of the influent water quality, sludge concentration, sludge age, microbiological microscopy, weather and other factors.So waste plastic processors should not complain about their business being difficult all day long. In fact, Feijiu's editor thinks that recycling waste plastic film is quite good. Serious homogenization of products. However, previous attempts at garbage classification have mainly focused on publicity and education, and the capital recognition of recycling and dismantling enterprises needs to be clarified by law; The engine, gearbox and other assembly components dismantled from scrapped cars should be released for distribution; Clarify the extended responsibility system for automobile production enterprises and the dismantling mechanism for enterprise retirement and other related issues. According to the Forward Industry Research Institute, the hazardous waste market is expected to reach a scale of over 200 billion yuan by 2020.The fan host is the heart component for manufacturing compressed air. This machine adopts the cylinder eccentricity method designed and developed by Toho Corporation in Japan, with high machining accuracy and low operating noise. The air chamber quantitatively and continuously stores the compressed air sent by the main engine, greatly reducing the pulsation of the discharged air, and also plays a role in oil and gas separation. The air chamber is equipped with a safety valve and pressure gauge. The air filter plays an important role in bringing clean air into the fan. Once dust and dirt enter the host, it will wear down the fan, dirty the engine oil, and shorten the life of the fan.

The photochemical oxidation method has developed rapidly in recent years due to its mild reaction conditions and strong oxidation ability. However, due to the limitations of reaction conditions, various aromatic organic intermediates are produced during the photochemical treatment of organic matter, resulting in insufficient degradation of organic matter. This has become a problem that needs to be overcome in photochemical oxidation. Photochemical oxidation methods include photoexcited oxidation (such as 03/UV) and photocatalytic oxidation (such as TiO2/UV). The photoexcited oxidation method mainly uses 03 H202、 02 and air are used as oxidants to produce - OH under the action of light radiation. The photocatalytic oxidation method involves adding a certain amount of semiconductor catalyst to the reaction solution to produce - OH under the irradiation of ultraviolet light. Both methods treat organic pollutants through the strong oxidation of - OH.Clean the filter screen; Regularly clean the filter mesh of the filter. Maintenance of metering pump: The metering pump must be waterproof when in use or when flushing equipment. After adding materials to the raw material box, check whether there is any gas entering the feeding pipe of the metering pump. If there is, it should be discharged in a timely manner. The metering pump should be checked regularly for leaks. If there are leaks, the bolts should be tightened or repaired in a timely manner (see the metering pump manual for details).Refining 1 ton of steel from scrap steel is more effective than refining 1 ton of steel from iron ore on a permanent production line. According to data, in 2016, hazardous production reached 53.473 million tons, a year-on-year increase of 34.49%. There are various reasons behind the continuous decline in the purchase price of scrap steel, including the strong correlation between scrap iron prices and steel prices. In 2016,For air flotation equipment, the dissolved gas system is like the "heart" of the air flotation equipment and is also the main component of the air flotation equipment. At this stage, gas and water are sucked in together at the inlet of the pump, and mixed into dissolved gas and water through shear and pressure. The gas-liquid phase is fully mixed and reaches saturation. The gas content of the entire dissolved gas system reaches 10%, and the solubility of the gas is 100%, making the distribution of microbubbles during gas dispersion uniform, with an average bubble diameter of less than 30um. This dissolved gas system is an improvement and technological innovation of traditional air flotation, which improves the separation efficiency of air flotation and greatly reduces equipment production and operating costs.