●Description: During the initial rain, the rainwater of the first 2-8mm is generally polluted seriously and the flow is relatively small. The distribution of different pollutants in the rainwater was analyzed through the detection of the concentrations of PH, precipitable matter, total phosphorus, total ammonia, ammonia nitrogen and permanganate in multiple rains. Analysis shows that rainwater is acidic, and the concentrations of precipitates, total phosphorus, total ammonia, ammonia nitrogen and permanganate in rainwater are 9 ~ 245, 0.038 ~ 0.250/2.83 ~ 6.25/0.11 ~ 4.90 and 0.70 ~ 16.00 mg/ L; Except that the PH and total ammonia concentration changes with increasing rainfall are not very obvious, the concentration of other substances gradually decreases with the increase of rainfall; the concentration of various substances in the initial rainwater (except PH) is higher, and when the rainfall reaches The substance concentration tends to be stable when the thickness is 8 ~ 15mm. This product can effectively control the cleanliness of rainwater entering the reservoir. Our abandonment device can complete the automatic discharge of pollutants in the early stage. The device does not require electricity, which is energy-saving and durable.
●Installation method: Before installation, a 100mm thick concrete cushion is required. The device is placed on the cushion. After the pipes are connected, the installation can be completed by directly backfilling. A standard inspection manhole cover is set on the top of the device for easy cleaning.
●Application field: It is mainly used in the front-end pretreatment system of rainwater collection to play an initial filtering effect, so that the subsequent water treatment and collection process becomes simpler and more effective.
●Product Affiliation: This device is one of the main equipment of rainwater collection and reuse system
●Product parameter:
