Method and device for integral deodorization and sewage treatment of municipal sewage plants
A municipal sewage and sewage treatment technology, which is applied in biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of high construction investment cost, uneconomical operation, and single operation mode. Achieve the effects of reducing construction and operating costs, improving absorption and removal effects, and simplifying operation and management
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Embodiment 1
[0028] A new municipal sewage treatment plant has been designed and modified, and the patent of the invention is used to achieve the functions of aeration and pumping to treat malodorous gas at the same time. The daily water treatment capacity of the sewage treatment plant is 80,000 tons / day, the COD is about 300mg / L, the BOD is about 150mg / L, and the ammonia nitrogen is about 30mg / L. The system adopts oxidation ditch treatment process. The system collects the main sources of gas from the grille, aeration grit chamber and sludge dewatering machine room. The aeration grit chamber adopts a full-coverage form, and the total gas treatment capacity is about 14,000m 3 / h (including ventilation volume). A total of 27 sets of 40kW submersible jet aerators are used, which can meet the oxygen supply demand of the aeration tank and the transmission demand of malodorous gas at the same time. After the system construction is completed, the operation data shows that the COD of the seconda...
Embodiment 2
[0031] The design, renovation and construction of a city's new municipal sewage treatment plant was carried out. The sewage treatment plant has a water treatment capacity of 100,000 tons per day, and is designed to treat COD at 320mg / L, BOD at about 200mg / L, and ammonia nitrogen at about 30 mg / L. The A / A / O process is used to collect and treat the malodorous gas from the grille, aerated grit chamber and sludge thickening tank, with a total gas volume of about 21,000m 3 / h (including ventilation volume). A total of 40 40kW submersible jet aerators are used, which can meet the oxygen supply demand of the aeration tank and the transmission demand of malodorous gas at the same time. Considering that the amount of malodorous gas produced by the sewage treatment plant is quite different in summer and winter, this deodorization system adopts the method of constant opening in summer and regular opening in winter (opening of the deodorization system means that the blower is connected to...
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