1. Project overview
This project is located in the New Energy Industrial Park of the Qaidam Basin in Qinghai.The factory area is located in the Gobi Salt Lake Area, and the freshwater resources in the area are extremely scarce.
2. Raw water quality issues and project background
There are no high-quality freshwater resources around the factory area, and the production of water can only rely on the surrounding surface water and shallow groundwater.This kind of water body belongs to a typical plateau with high salt water quality, high mineralization, excessive salt content, and a large amount of sediment, suspended solids and colloidal impurities.The water quality is turbid all year round, and the water quality fluctuates more in seasonal and windy weather, and the stability is extremely poor.
In the early stage, the factory tried ordinary water purification equipment to treat water sources, but the effect was not ideal.Conventional filtration equipment can only remove impurities visible to the naked eye, and there is no way to remove salt from the water.After being put into use, not only does the purity of the effluent not meet the requirements of the new energy production process, but there are also frequent problems such as pipeline fouling, corrosion of high-pressure equipment, and clogging and scrap of membrane components.Frequent equipment shutdowns and maintenance not only delay production progress, but also significantly increase operation and maintenance costs, which seriously restricts the normal and stable production of the factory, and the entire set of old water purification equipment is completely unable to adapt to the working conditions of the factory.
3. Customized solutions
Combining the environmental characteristics of the large temperature difference between day and night, low temperature in winter, and low air pressure in the Qinghai Plateau, with the average daily water consumption of the plant and the energy-saving needs of green electricity, Dean Water treatment has customized a complete set of solutions for double-membrane seawater desalination adapted to the working conditions of the plateau, abandoning the shortcomings of generalized equipment, and solving the problem of high-salt water purification in a targeted manner.
The whole process adopts "multi-stage pretreatment + two-stage reverse osmosis deep desalination + voltage stabilized constant current control system".The front is equipped with multi-media filtration and precision filtration units to intercept impurities such as sediment and suspended solids in the raw water layer by layer, purify the water quality in advance, and protect the core membrane components at the back end.Then, the two-stage reverse osmosis system is deeply desalinated to efficiently remove excess substances such as salt, heavy metals, and soluble solids from the water.
The equipment has added an exclusive anti-freezing, anti-blocking, and voltage regulation design for the plateau, which completely solves common problems such as freezing and cracking of equipment in winter, reduced efficiency of low-temperature desalination, and fouling of pipelines.At the same time, it is equipped with a fully automatic intelligent control system, which can be connected to the photovoltaic green power system in the factory, intelligent start-stop, automatic flushing, and fault self-inspection, without the need for special personnel on duty, to minimize the energy consumption of equipment operation, and fit the low-carbon and energy-saving production concept of new energy factories.
4. Project processing effect
After the project was officially put into operation, the entire seawater desalination system operated very stably and was perfectly adapted to the complex working conditions of the plateau.The water quality of the effluent from the equipment is evenly up to standard, and the desalination rate is stable and maintained in a high standard range, which fully meets the strict standards of water for new energy production processes, water for equipment cooling circulation, and water for daily operation and maintenance of the plant.
Compared with before the transformation, problems such as pipeline fouling, equipment corrosion, and turbidity of water quality have been completely eliminated, and the equipment failure rate has been greatly reduced, and the production line will no longer be shut down for maintenance due to water quality problems.At the same time, relying on the green power supply and operation of the plant, the overall energy consumption cost of operation and maintenance is much lower than that of the traditional outsourcing pure water model, the utilization rate of water resources is high, and the long-term use is cost-effective, which perfectly solves the core pain points of water shortage and substandard water quality in the plant.
5. True customer feedback
According to the feedback from the project leader, the most worried thing in the early stage was the acclimatization of plateau equipment, many operating failures in winter, and troublesome operation and maintenance in the later stage.After DIEN's customized desalination equipment landed, it completely exceeded expectations.The equipment has a high degree of automation and does not require special care. It runs stably all year round, and there will be no freezing and efficiency attenuation in the low-temperature environment in winter.
Moreover, the manufacturer's quotation is transparent, the price of seawater desalination equipment is customized according to the actual working conditions, the configuration details are clear, and there are no routine additions.From pre-survey, program design, equipment production to on-site installation and commissioning, and after-sales guidance, one-stop service is particularly worry-free.Since its stable operation, the water quality has always been up to standard, which has greatly saved the cost of outsourcing pure water and equipment maintenance. Follow-up water expansion projects in the plant will also give priority to cooperation with DIEN water treatment.
