How can 394 county-level cities solve the problem of black and odorous water in Suger Baby?

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The Housing and Urban Construction Department, the Ministry of Ecology and Environment and other four ministries and commissions recently issued the “Deeply Implementation Plan for the Management of Urban Black and Smelling Waters”, which sets the target tasks for the county-level urban planning: County-level urban bureaus must complete the inspection of black and odorous waters in built areas, and regularly publish the list of black and odorous waters in each city, the status diagram of black and odorous waters (with the scope of urban built areas), rivers and lakes, and the main responsible departments and plans to achieve the marking date.

Manila escortThere are 691 cities above the county level, of which 394 cities are county level, accounting for more than half. In order to prepare effective plans and ensure continuous management effectiveness, how should 394 county-level cities conduct investigations of black and odorous water in the later stage? To this end, this reporter visited Tang Jianguo, chief engineer of Shanghai Urban Construction Design Research Institute (Group) Co., Ltd., to read and investigate the content of the local area.

The investigation and cause analysis of urban black and odorous water bodies are conditions for making good management plans. Therefore, the investigation will never be too late to pass the scene and take care of the matter. Otherwise, it will not be too late to provide first-hand, real and useful information for the correct management plan, and it will not be too targeted. It can also lead to complete management.The black and smelly water will have the risk of returning to black and smelly again, and a large amount of investment capital will not be difficult to “waste”.

“Inspect, we must find out the real problem, and we must also find out the causes of the real problem, and we must also ensure the quality of the Escort manila‘s investigation results.” Tang Jianguo told the reporter, “If the investigation is not true, the subsequent management implementation plan will be ‘virtual’ and cannot be affected. Therefore, municipal bureaus of all levels must pay close attention to it, organize it effectively, and strictly control the ‘quality of the black and odorous water investigation. href=”https://philippines-sugar.net/”>Sugar daddyMeasuring the measurement’. ”

Tang Jianguo called this black and odorous water inspection a “big investigation.” He explained that the reason why this is called Escort manila was because the system had not been investigated or tested before, so that the system should be more aware of the machine and the system should be inspected. In terms of content, a series of investigations such as drainage outlets, backflow, mountain and river culverts, mixed connections, drainage pipeline basic information and shortcomings should be covered; it should also include water base sludge, hydrological and hydrological quality, and even the basic situation of the management team and related mechanisms, and should also cover rainwater drainage pipelines and facilities.

“So ‘big inspection’ does not mean drainage pipeline inspection, its connotation should be richer, and the latter should not be replaced by the former,” said Tang Jianguo.

The urban management network is not only the inner part of the city, but also the blood vessels of the city. The scale of urban underground pipelines in my country is huge, with the total length of drainage pipelines exceeding 700,000 kilometers. After a long time, repair problems are widely available. In fact, the drainage pipes in some places not only have different levels of leakage, corrosion, cracking, settlement and other problems, but some pipes are even blocking the “blood vessels” of death, becoming one of the “causes” of urban black and odorous water.

Before the investigation, Tang Jianguo’s construction methods were only discussed. It is recommended to be a good “scavenger” and dredge drainage pipes first. He said that “unblocking drainage pipes is a condition for the operation quality of drainage pipes, and only the inspection on this basis is interesting. To detect, you must first lower the water level and dredge the pipeline. This is the responsibility of the drainage management unit.”

Black and smelly water bodiesWhat should I check? Sugar daddy?

The targets of the investigation are drainage facilities and water bodies in the black and odorous water basin listed in the city. Tang Jianguo believed that the key to the investigation was to see if there was direct discharge of sewage, whether there was external water inlet and external water quality.

He pointed out that the first thing to do is to check the drain outlets. For specific reference, please refer to the 2016 “Technical Guidelines for Urban Black and Smelling Water Axe Correction-Drainage Ports, Pipelines, and Inspection Well Management” to understand whether there can be drain outlets in drought, severe drain outlets in rainy days, and check the water quality, and whether there are drain outlets with river water backflow.

“The water inlet concentration of the sewage treatment factory should also be investigated, because we can make preliminary decisions on the entire sewageSugar daddy to collect the entire sewageSugar The level of water inflow outside the baby system also includes water changes in drought and rainy days and overflow surveys. “Tang Jianguo also used a picture example. If the concentration of the inflow purified substance of the sewage treatment factory does not have a “heartbeat” and the inflow water quality is constant on a straight line, it can be determined that its inflow water is inflow Sugar daddy has a problem.

The picture is a sewage treatment factory’s inlet purified substance concentration curve diagram. Image source: Tang Jianguo.

Conduct investigations on urban drainage pipelines. Some urban roads have no distinction between rain and sewage on the drainage pipes. There is sewage in the rainwater pipes and rainwater in the sewage pipes, so we must first investigate the effectiveness of the drainage pipes, such as whether there is silt or mud., pipe flow, etc., in order to solve the performance disadvantages, CCTV detection (pipeline video detection) must be used to check the structural disadvantages, especially groundwater inlet spots or sewage outstrips. Tang Jianguo emphasized that “Sugar babyCCTV detection condition is that the pipeline has an “empty pipe”. If the pipeline is not solved, there is no way to conduct a CCTV detection, which is why it is said that pre-processed.”

The other is mixed connection investigation. In the past, the survey masters focused their attention on the Sugar daddy area. Tang Jianguo reminded, “We must pay attention to the internal investigation of enterprises and institutions.” He used Shanghai’s example. During the actual research process, 44% of the mixed points in Shanghai occurred in enterprises and institutions. The baby accounts for the largest proportion of mixed points, with 24% of mixed points occurring in small shops on the road, while only 15% occurring in the body area.

Tang Jianguo said that not only should we check the mixed connection of the “facade” of rainwater downwater pipes, but also the “three-dimensional mixed connection” of the air pipelines. He said, “What we are very familiar with is the water from the laundry machine in the residential area to the downspout pipe. In fact, many of the more severe mixed connections in small areas that have adopted the diversion system are not well maintained. The sewage pipes are blocked, so the sewage pipes are connected to the rainwater pipe. Although the sewage in the small area no longer overflows, the result is mixed connections.” At the same time, he suggested that the mixed connection investigation should not be “one” and the mixed connection investigation can be combined with the external water inlet investigation. When investigating the problem, your mother, formerly, said, are you all the manager? “There must be pictures, status, data, and instructions.

For mountainous cities and hilly cities, we must also pay attention to the pollution investigation of mountain, river and canal culverts. Tang Jianguo explained, “The effectiveness of these cities’ mountain and river canals (river) is originally secreting mountain torrents and spring water. However, as the city develops these