Underground domestic sewage treatment equipment in Shandong
理效果好，投资省，占地少，维护方便等优点。 The buried domestic sewage treatment equipment in Shandong is a product obtained by our company after many studies and tests. This product uses a relatively advanced treatment process. The burial of the equipment reduces the land approval, design and construction, etc. Therefore, it has the advantages of good processing effect, low investment, less land occupation, and convenient maintenance.
回用设备。 Due to the above advantages, Shandong underground buried sewage treatment equipment plays a significant role in hotels, residential quarters, hospitals, township hospitals and similar industrial sewage treatment. Our company can also provide Zhongshui at the same time according to customer requirements Reuse equipment.
The design of the equipment is mainly for domestic sewage treatment and industrial organic sewage treatment. The main treatment method is to contact the oxidation pond with the more mature biochemical treatment technology. 20mg/L计算。 Water quality design parameters are calculated according to the sewage inlet water BOD5 is 250mg / L, and the outlet water BOD5 is 20mg / L.
The equipment consists of seven parts: ⑴ primary sink, ⑵ anoxic tank, ⑶ contact oxidation tank, ⑷ secondary sink, ⑸ disinfection tank, disinfection device, ⑹ sludge tank, and ⑺ fan room. These seven parts can be described like this:
⑴Primary settling tank: The primary settling tank is a vertical flow sedimentation tank. The rising flow velocity of sewage in the sedimentation tank is 0.3 to 0.4 mm / sec., And the sedimented sludge is lifted to the sludge tank.
池有效停留时间为2.5～3.5h，溶解氧控制在≤0.5mg/L。 ⑵Anoxic tank: Anoxic tank is set up for denitrification treatment. YDT type three-dimensional elastic filler is set in the tank as a carrier of denitrifying bacteria. The denitrifying ammonia and nitrous acid oxygen in the nitrating solution are affected by denitrifying bacteria Reduction to nitrogen to achieve the purpose of denitrification, the effective residence time of the anoxic tank is 2.5 to 3.5h, and the dissolved oxygen is controlled to ≤0.5mg / L.
(3) Contact oxidation pond: The sewage flows to the contact pond for biochemical treatment. The contact pond is divided into three stages with a residence time of 8 hours. The filler is a novel elastic filler that is easy to condense and does not block. The gas-water ratio of the contact oxidation pond is about 15: 1.
⑷Second settling tank: The biochemical sewage flows to the second settling tank. The second settling tank is a vertical flow sedimentation with a surface load of <1.0m3 / m2.h. The sludge is lifted to the sludge tank.
⑸Disinfection tank, disinfection device: According to the specifications of the disinfection tank: the standard is not less than 30 minutes. If it is hospital sewage, the disinfection tank can increase the residence time to 1 to 1.5h.