Monitoring data from the above we can see that the system is running well, the removal rate high; CODCr: 97.7%; BOD5: 97.2%; SS: 93.6%. After the treated wastewater of the indicators , have reached the standard of Guangdong Province The total investment of 4.85 million, operating costs 1.80 yuan / m3 water.
(3) monitoring results show that: The results show that the process is stable, easy to operate, and the effluent standards and stability. < / p>
(4) design of small sewage treatment plant automation control stations should be strengthened to reduce the manual to avoid staff (non-professional and technical staff) operations caused by improper treatment effect of wastewater treatment station of instability.
(1) Noise Control: design, equipment are low-noise equipment, so equipment will not generate noise much impact on the surrounding environment .
main structures in Table 2.
Figure 1 wastewater treatment process
2.2 Process Description
The company produces wastewater main features are: (1) are complicated, containing a variety of natural and organic contaminants, biodegradation is more difficult in some components or inhibition microbial growth; (2) from the plant production processes, water quality, water fluctuations; (3) intermittent discharge, the process shown in Figure 1.
4 treatment effect
for example in a pharmaceutical factory:
Table 3 Major equipment
(2) process running practice shows that the entire project investment, technology is simple, stable operation operability, the running cost is moderate, at 1.80 yuan basic control / m3 water.
3 main structures, equipment and technical parameters
major equipment shown in Table 3.
(3) Electrical Control: Design range including new low-voltage distribution equipment. the power provided by the factory to the new distribution box, 380 V/220 V, 50 Hz. distribution system using three-phase four-wire system. earthing protection system is TN-S system.
Table 2 the main structure
Abstract: This paper introduces the anaerobic and aerobic treatment of pharmaceutical wastewater engineering. which is the secondary aerobic biological oxidation + BAF combined process. by wastewater CODCr, BOD5, SS and other pollutants removal efficiency of the analysis shows that the combined effect of pharmaceutical wastewater treatment process, the running stability, simple operation.
plant wastewater by the removal of a large floating grid substance into the regulation pool, regulation pool with perforated pipe pre-aeration, balanced water quality, water pump upgrade after the upgrade into the anaerobic tank; pool through anaerobic hydrolysis, acidification and methanogenesis, organic polymers in waste water was degraded to small organic molecules, carbon dioxide and water, and then enter 1 # sedimentation tank, the slurry separation, part of the sludge back to the anaerobic tank, anaerobic tank sludge to increase the concentration of the supernatant gravity sedimentation tank # 1 to the collecting tank, sump pumps in the wastewater upgrade set to enhance the level of biological contact oxidation tank for aerobic treatment, through aeration blowers often dissolved oxygen in the water, the oxygen is always guaranteed to meet the needs of micro-organisms, and play a role in stirring; adsorption by aerobic microorganisms, decomposition of organic matter is degraded to inorganic salts, water and carbon dioxide, pollutants degradation, through a bio-oxidation pond effluent then gravity solution to the sedimentation tank, the supernatant was separated from the slurry into the secondary bio-contact oxidation pond and then into the aerobic treatment of students, but also to the pool aeration, in the micro- matter further degradation of pollutants under, followed by waste water into the secondary settling tank solid-liquid separation once again, if the standard is direct efflux supernatant, the supernatant can not be standard if the supernatant into the BAF, further biochemical processing, the final supernatant was clear pool standards efflux, biological aerated filter backwash on a regular basis.
a Guangdong Pharmaceutical Co., Ltd. is a professional production of cephalosporin bulk drugs and intermediates of the foreign-invested enterprises. The company's main products cefuroxime sodium, cefuroxime acid, crystalline cefuroxime axetil, cefuroxime axetil amorphous, Cefminox sodium, in a variety of raw and auxiliary materials through the synthesis, hydrolysis, condensation reaction, centrifugation, drying and other processes produce a certain amount of wastewater. wastewater main pollutants CODCr, BOD5, SS, if the direct discharge of wastewater will be seriously contaminated the surrounding environment. In order to protect the environment and reduce the life of the surrounding residents, the impact of production, the company set up a waste water treatment facilities. of the treated effluent to the Guangdong Province, local standard total of 700 m3 / d, 24 h treatment system operation. at running 24 h, the design of water, 29.2 m3 / h. According to laboratory analysis to determine the raw water influent water quality, water quality after treatment should be achieved outside the local standards of Guangdong Province pollutant discharge limits Technology
2.1 Process
the system to process engineering in February 2008 completion and debugging, April 2008 EPA monitoring acceptance of the pollutant indicators are to meet emission standards, wastewater treatment results in Table 4.
(5) anti-corrosion measures: wastewater treatment station of the connecting pipe between the cell body and pumps are used between the connecting pipe UPVC water pipes, air pipes water part of the galvanized steel pipe, UPVC pipe underwater use.
6 Conclusion
(4) civil engineering design: the natural foundation of civil engineering design conditions and design of the structure of a similar structure. structure used in all reinforced concrete structures, seismic intensity by eight minimum security, concrete permeability rating of S6.
2.3 Design Notes
(1) The process is the quality and quantity of water change adaptation is good, because the water quality sudden changes in water had no effect on the water, so this process is more suitable for the production of wastewater treatment with cyclical.
sludge in the sedimentation tank and all the sludge into the second sedimentation tank sludge thickening pool, were concentrated and then transported to the filter pump for dewatering, sludge cake Sinotrans by the sanitation department.
Table 4 indicators out of the water system-wide monitoring results mg · L-1 ( pH except)
(2) odor control: the smell of the sewage treatment station under normal operating conditions, will not exceed the station area odor control requirements.
Keywords: Pharmaceutical wastewater; anaerobic ; contact oxidation; BAF
sludge thickener supernatant and filter press filtrate to adjust the pool return re-processing.
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